Daily water loss in Chinese young men

doi:10.3969/j.issn.2095-4344.2016.11.013

Chinese Journal of Tissue Engineering Research ›› 2016, Vol. 20 ›› Issue (11): 1603-1609.doi: 10.3969/j.issn.2095-4344.2016.11.013

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Daily water loss in Chinese young men

Hao Wen-rui^{1, 2}, Quan Hai-ying^{1, 2}, Li Lu^{1, 2}, Zhang Cheng³, Wu Da-wei³, Zhang Kuan^{1, 2}

¹School of Biomedical Engineering, Capital Medical University, Beijing 100069, China; ²Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application, Capital Medical University, Beijing 100069, China; ³China Astronaut Research and Training Center, Beijing 100094, China

Received:2016-02-09 Online:2016-03-11 Published:2016-03-11
Contact: Zhang Kuan, M.D., Professor, School of Biomedical Engineering, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application, Capital Medical University, Beijing 100069, China
About author:Hao Wen-rui, Studying for master’s degree, School of Biomedical Engineering, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application, Capital Medical University, Beijing 100069, China
Supported by:
the National Natural Science Foundation of China, No. 31170900

Abstract

Abstract:

BACKGROUND: No studies currently focus on the measurement of daily water loss under certain physical activity level continuously and precisely.
OBJECTIVE: To provide evidence for daily water requirement in Chinese young men based on the measurement of the daily water loss in Chinese young men under moderate physical activity.
METHODS: Twenty male subjects were enrolled, and 23-hour whole-body sweat loss and urine output were measured using high-precision body weighting scale in whole-room indirect calorimeter. The results were converted to daily (24-hour) water requirement to determine the daily water requirement. Daily whole-body sweat loss per unit body weight, daily whole-body sweat loss per unit fat free mass and daily whole-body sweat loss per unit surface area were calculated.
RESULTS AND CONCLUSION: In Chinese young men, daily water loss was (3 339.7±509.9) g, daily urine output was (1 982.9±449.5) g and daily whole-body sweat loss was (1 356.7±215.6) g. There was a linear correlation between water intake and water loss (r=0.616, P < 0.05). Daily whole-body sweat loss per unit body weight was (21.0±3.6) g/kg, daily whole-body sweat loss per unit fat free mass was (25.8±3.9) g/kg and daily whole-body sweat loss per unit surface area was (799.4±129.4) g/m2. Daily water requirement of Chinese young men under moderate physical activity is approximately 3 340g, and moreover, water loss increases with the increase of water intake.

中国组织工程研究杂志出版内容重点：组织构建；骨细胞；软骨细胞；细胞培养；成纤维细胞；血管内皮细胞；骨质疏松；组织工程

Hao Wen-rui, Quan Hai-ying, Li Lu, Zhang Cheng, Wu Da-wei, Zhang Kuan. Daily water loss in Chinese young men[J]. Chinese Journal of Tissue Engineering Research, 2016, 20(11): 1603-1609.

Figures/Tables 4

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Daily water loss in Chinese young men

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